public/Find-MarkdownImages.ps1
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<#
.SYNOPSIS Finds all image references in a markdown file. .DESCRIPTION Parses a markdown file and extracts all image references including: - Standard markdown format:  - Obsidian format: ![[image_path|alt text]] Returns information about each image including the original markdown syntax, image path, alt text, and title. .PARAMETER File The path to the markdown file to analyze. .PARAMETER AttachmentsDirectory The directory where attachments are stored. If specified, it will be used to resolve relative paths for images. .PARAMETER ExcludeExternal If specified, excludes images with external URLs (starting with https). Otherwise, all images are returned. .EXAMPLE Find-MarkdownImages -File "post.md" .EXAMPLE Find-MarkdownImages -File "post.md" -AttachmentsDirectory "C:\Attachments" This command will find all images in the specified markdown file and resolve their paths against the provided attachments directory. #> function Find-MarkdownImages { [CmdletBinding()] param( [Parameter(Mandatory = $true)] [ValidateScript({ Test-Path -Path $_ -PathType Leaf })] [string]$File, [Parameter(Mandatory = $false)] [string]$AttachmentsDirectory, [Parameter(Mandatory = $false)] [switch]$ExcludeExternal ) $content = Get-Content -Path $File -Raw $images = @() $fileDirectory = Split-Path -Path $File -Parent # If the file is in the current directory, use the current directory if ([string]::IsNullOrEmpty($fileDirectory)) { $fileDirectory = "." } if ([string]::IsNullOrEmpty($AttachmentsDirectory)) { if ($BloggerSession.AttachmentsDirectory) { # Use the Blogger session's attachments directory if available Write-Verbose "Using PSBlogger config for attachments directory: $($BloggerSession.AttachmentsDirectory)" $AttachmentsDirectory = $BloggerSession.AttachmentsDirectory } else { # Default to the file's directory if no attachments directory is specified $AttachmentsDirectory = $fileDirectory } } # Regex pattern for standard markdown images:  $standardPattern = '!\[([^\]]*)\]\(([^)]+?)(?:\s+"([^"]*)")?\)' # Regex pattern for Obsidian images: ![[image_path|alt text]] $obsidianPattern = '!\[\[([^|\]]+?)(?:\|([^\]]*))?\]\]' # Collect all matches with their positions $allMatches = @() # Find all standard markdown image matches $standardMatches = [regex]::Matches($content, $standardPattern) foreach ($match in $standardMatches) { $allMatches += @{ Match = $match Position = $match.Index Format = "Standard" } } # Find all Obsidian image matches $obsidianMatches = [regex]::Matches($content, $obsidianPattern) foreach ($match in $obsidianMatches) { $allMatches += @{ Match = $match Position = $match.Index Format = "Obsidian" } } # Sort matches by position in document $allMatches = $allMatches | Sort-Object Position # Process each match in document order foreach ($matchInfo in $allMatches) { $match = $matchInfo.Match $format = $matchInfo.Format if ($format -eq "Standard") { $altText = $match.Groups[1].Value $imagePath = $match.Groups[2].Value.Trim() $title = if ($match.Groups[3].Success) { $match.Groups[3].Value } else { "" } } else { # Obsidian format $imagePath = $match.Groups[1].Value.Trim() $altText = if ($match.Groups[2].Success) { $match.Groups[2].Value } else { "" } $title = "" # Obsidian format doesn't support titles } # Conditionally skip external URLs if -ExcludeExternal is specified if ($ExcludeExternal -and ($imagePath -match '^http(s)?://')) { continue } # Resolve the image file path $resolvedPath = Resolve-ImageFilePath ` -FilePath $imagePath ` -BaseDirectory $fileDirectory ` -AttachmentsDirectory $AttachmentsDirectory # Check if the file exists if ($resolvedPath -match '^http(s)?://' -or (Test-Path -Path $resolvedPath -PathType Leaf)) { $images += New-MarkdownImage ` -OriginalMarkdown $match.Value ` -AltText $altText ` -LocalPath $resolvedPath ` -RelativePath $imagePath ` -Title $title ` -FileName $(Split-Path -Path $resolvedPath -Leaf) } } return $images } Function New-MarkdownImage { param( [string]$OriginalMarkdown, [string]$AltText, [string]$LocalPath, [string]$RelativePath, [string]$Title = "", [string]$FileName ) return [PSCustomObject]@{ OriginalMarkdown = $OriginalMarkdown AltText = $AltText LocalPath = $LocalPath RelativePath = $RelativePath Title = $Title FileName = $FileName NewUrl = $null # This will be set after uploading to Google Drive } } Function Resolve-ImageFilePath { param( [string]$FilePath, [string]$BaseDirectory, [string]$AttachmentsDirectory ) # Test if the file path is relative to the base directory if (-not [System.IO.Path]::IsPathRooted($FilePath)) { # If the path is relative, resolve it against the base directory $resolvedPath = Join-Path -Path $BaseDirectory -ChildPath $FilePath } else { # If the path is absolute, use it as is $resolvedPath = $FilePath } if ($FilePath -match '^http(s)?://') { Write-Verbose "Found external image URL: $FilePath" return $FilePath } if (Test-Path $resolvedPath) { Write-Verbose "Found image at base directory: $resolvedPath" return $resolvedPath } #Test if the file path is relative to the attachments directory $resolvedPath = Join-Path -Path $AttachmentsDirectory -ChildPath $FilePath if (Test-Path $resolvedPath) { Write-Verbose "Found image at attachments directory: $resolvedPath" return $resolvedPath } # # If not found, recursively search the attachments directory $files = @(Get-ChildItem -Path $AttachmentsDirectory -Recurse -File -Filter $FilePath) if ($files.Count -gt 0) { if ($files.Count -gt 1) { Write-Warning "Multiple files found matching '$FilePath' in '$AttachmentsDirectory'. Returning the first match." } Write-Verbose "Found image in attachments directory: $($files[0].FullName)" return $files[0].FullName } # If still not found, return the original file path return $FilePath } |